De naeyer



(No Model.) Sheets-Sheet 1. L. DE NAEYER.

SEGTIONAL BOILER.

No. 365,801. I Patented July 5, 1887.

(Nd Model.) 3 Sheets-Sheep. 2. Y

L. DE NAEYER.

SEUTIONAL BOILER.

.5 my Patented a? 5 188 N. PEIERS. nmvuimgn ur. Washingion. 0.0.

(No Model.) s Sheets-Shee t 3..

L. DE NAEYBR. SEUTIONAL BOILER.

No. 365,801. Patented July 5, 1887..

NITED STATES PATENT OFFICE.

LOUIS DE NAEYER, OF \VILLEBROEK, BELGIUM.

SECTIONAL BOILER.

SPECIFICATION forming part of Letters Patent No. 365,801, dated July 5, 1887.

Application filed May 2, 1887. Serial No, 236,865. (No model.) Patented in Belgium March .10, 1880, No. 50,798, and in France May 18, 1880, No. 136,721.

To all whom it may concern.-

Be it known that I, LOUIS DE NAEYER, a subject of the King of Belgium, residing at \Villebroek, Belgium, have invented certain new and useful Improvements in Sectional Boilers; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My improved boiler 'is composed of a series of tubes disposed quincuncially or approximately quincuncially, and arranged above the fire-box or furnace, as shown in Figure 1. The said tubes are connected two by two by means of metal chests or boxes. The parts are superimposed in such a manner that the tubes are quincuncial, andthe chests or boxes of two superimposed elements or parts are connected for the circulation of the water and steam by means of small metal pipes or tubes, hereinafter described. The entire series of tubes and chests or boxes are arranged on an incline from the front to the rear of the boiler. The boxes or chests connecting the tubes form the front and rear walls of the boiler, and as they are not rigidly connected it will be readily understood that all the parts of the boiler can expand freely. The longitudinal walls of the boilerare formed of masonry, or, under certain circumstances hereinafter described, of tubes placed either obliquely or vertically. In these latter cases there is but an insignificant loss of heat through the walls. The various columns or rows of the parts arranged side by side are all connected at the rear lower part to a feeding collector or chest, A, and at the upper front part to the steam chest or collector B, Fig. 1. The said steam-collector is connected by one or more pipes, 0, (according to the strength or power of the boiler,) with asteam reservoir or chamber, G, surmounted by-a dome, H. The steam enters this reservoir through one or more bent tubes in order to project the water it may have carried with it toward the bottom. of the said reservoir; or a plate, E, of sheet-iron may be riveted in the interior of the reservoir, as shown in Fig. 1, so that the steam will impinge against the same. The water projected into the reservoir returns'to the feed-collector through two large metal pipes, D. The height or level of the water is so regulated that there is some water in the reservoir. Thus asufficient volume of water and steam is obtained to allow the generator to act in as simple a manner as an ordinary cylindrical boiler. By means of these arrangemcntsthe building up or putting together of the boiler is rendered very simple and very expeditious, and if it becomes nec essary from any'cause to replace a tube, only one part or portion need be removed, an operation rendered very easy by the arrangement adopted.

To effect the internal cleaning,it is sufficient to dismount the front and rear connections or V communications,when access to the interior of the tube is very easy. A simple scraping with a scraper will then be found sufficient to effect the cleansing of the said tubes. Vhen the cleansing is regularly effected, there is never any deposit excepting in the two or three lower rows of tubes. The juxtaposition of the boxes or cases leaves a small free space between each row of the parts or elements, which space is taken advantage of for effecting the external cleaning of the tubes by means of a jet of steam. The external cleaning of the tubes can also be effected by means of fixed pipes placed in the side walls and communicating with the steam-reservoir. This arrangement of cleaning apparatus is hereinafter described. Although by the employment of this boiler alone nine liters of water are turned into steam for each kilogramme of fuel consumed, yet the said boiler allows the products of combustion to escape at a tempera ture of from 200 to 220 centigrade. In countrieswhere fuel is dear this temperature of the smoke or products of combustion when they escape would entail a considerable loss. I therefore employ, in connection with the said boiler, a heater, as shown in Fig. 1. This heater A is composed of tubes connected by cases and boxes in a similar manner to the A boiler; but some of the boxes are slightly modified in construction, so as to cause the water to circulate through an entire horizontal row of the tubes before passing into the next row above. The use of this heater enables me to of temperature.

obtain a saving of from ten to fifteen per cent.

of fuel, and the gases which enter the chimney have a temperature of about 100 only.

In the accompanying drawings, Fig. 1 rep- 5 resents a longitudinal vertical section of my improved boiler and the heater combined therewith. Fig. 2 represents a front elevation, and Fig. 3 a rear elevation, of said boiler. Fig, 4 represents a transverse vertical section through the masonry of said boiler, showing I 5 a detail plan of the reservoir and tubes, and

Fig. 7 a side elevation of said modified boiler,

I the different parts of said view representing opposite sides, which are juxtaposed for convenience. Fig. 8 represents a vertical section of another modification.

In said drawings T designates the fire-box. P designates deflector plates, which cause the products of combustion to envelop the entire exterior of the water-tubes'as they ascend. A flue, Y, connects the fire-box with the heater A. The products of combustion finally escape through another flue, X, to the smoke-stack.

L designates the water-tubes connected to 0 each other by'cases or chests M, both being preferably of iron. Links or boxes N connect the superposed chests or cases. These links allow the parts of the boiler to expand or change position under the influence of change They are preferably made of cast-iron; but other metal will do. Stirrupbolts 0 keep said links in their proper-position.

A designates the feeding-collector chest, having an inlet-valve, V, and a discharge- 40 cock, V.

5 the steam isreturned to the feeding-collector A by tubes D.

R designates a steam cock mounted on the dome of the boiler and distributing steam to the bent tubes S. These pipes or tubes com; municate with two pipes, T, from which extend small pipes or tubes U. The entrance of steam into any one of these latter tubes is con"- trolled by means of cooks V.

K designates a series of steam-injectors ex- 7 tending laterally from pipes U.

' used for cleansing the exterior of water-tubes L.

These are The heater A is provided With tubes L, arranged horizontally in superposed layers. The water entering one tube of a layer passes through all the other tubes of that layer before entering those of another. Connecting boxes and links and cleansing-pipes are used, as in the boiler. They need not be again described.

The modification shown in Figs. 5, 6, and 7 is for the purpose of obtaining greater stability. To this end, while retaining the inclined position-of the tubes, I have modified the chests connecting them, so that they are perfectly horizontal, instead of being inclined at the front and rear. The reservoir G is also shown in Fig. 5 as arranged transversely to the water-pipes and at the rear of the boiler, where, by reason of the inclination of said pipes, a certain amount of space is available beyond that above the other end. This construction is particularly serviceable when there is not much height at command-as, for example, where the boiler must go under a low ceiling. In this figure the side walls are shown as replaced by tubes T, parallel to the tubes of the boiler. As shown in Fig. 6, the reservoir G is connected with the steanrcollector B by a series of tubes, V, which are bentin the middle, so that they may expand more freely. As shown in Figs. 5 and 7, links or ajutages N connect the series of pipes with each other and with the feeding-collector A and steamcollector B, as before described.

Fig. 8 represents another modification of my improved boiler, in which the longitudinal sides are replaced by vertical tubes T. A designates the ajutages or links connecting the upper chests to each other, the last of said ajutages putting these chests in communication with the feeding apparatus. chests are similarly pointed with links, thelast connecting them with the feeding-collector.

What I claim is- A boiler consisting of a series of tubes, L, the terminal chests M, connecting them in pairs, and the links or boxes N, which allow yielding, in combination with the water-chest A, arranged under the rear end of said series of tubes and connected to the chests of all the lower ones by said links N, the steam-chest B, arranged above the front end of said tubes and similarly connected to all the upper ones, and the steam-reservoir G, which receives steam from chest B, and is provided with deflector E, dome H, and suitable outlet-tubes, substan-;

tially as set forth.

In testimony whereof I affiX my signature in presence of two witnesses.

LOUIS DE NAEYER.

Witnesses:

LOUIS MOMMAERT, ADOLPH STEIN.

The lower ICC IIO 

